Dump car



Aug. 12, 1941. A. v. CARD 2,251,981

DUMP CAR Filed Aug. 15, 1939 3 Sheets-Sheet l INVENTORv ARTHUR V CARfl BY I yam

A. V. CARD Aug. 12, 1941.

DUMP CAR 3 Sheets-Sheet 2 Filed Aug. 15, 1959 I INVENTOR. ART/10R l/ CARD z 1 WW Aug. 12, 1941. A. v. CARD 2,251,981

DUMP CAR I Filed Aug. 15, 1938 5 Sheets-Sheet 3 INVENTOR. A/PTH UR V CA Q0 $443M gm AT ORNEYS.

Patented Aug. 12, 1941 DUMP CAR Arthur V. Card, Denver, 0010., assignor to The C. S. Card Iron Works Company, Denver, 0010., a corporation of Colorado Application August 15, 1939, Serial No. 290,179

16 Claims.

This invention relates to improvements'in railway dump cars.

The Granby type railway dump car is in common use, particularly in the mining industry.

The fundamental components of the Granbydump body to tip and discharge its load through the dump gate. The inclined track ordinarily leads to a length of track that is elevated with reference to the rails upon which the car travels so that the body is in its tipped-up dumping position for an appreciable length of time while the dump roller traverses the elevated track. Cars of this Granby type may be dumped while they are moving along at four or five miles an hour, thus spreading their load along the dump as they travel.

An objection to the Granby type dump car is that the dump roller ordinarily projects on a rigid arm, from the side of the car body, thus creating a continuous hazard that it might strike something, such as workmen, other equipment, the walls of a mine tunnel, etc.

It will be understood that in mining work, dump cars usually are required to operate where clearances are limited. In amine tunnel, for

instance, the walls of the tunnel may provide only a minimum of clearance for the ore cars.

It is highly desirable in designing and building cars for use in or adjacent mines, to have as great a capacity in the car body as possible, with the lowest possible external measurements, and

quire.

Another object is the provision of a retractable dump roller for a dump car, that readily may be extended or retracted, and which will remain in its retracted position securely.

A still further object is to provide in a Granby type dump car, a dump roller that may quickly be attached or completely removed from the car body, as the occasion may require.

Other objects and advantages reside in details of design and construction which will be more fully disclosed in the following description and in the drawings wherein like parts have been similarly designated and in which:

Figure 1 is a general side elevation of a dump car embodying the present inventive concept;

Figure 2 is a transverse sectional view taken along the line 2-2 of Figure 1; v

Figure 3 is a fragmentary sectional view showing the dump roller of Figures 1 and 2 in its retracted position;

Figure 4 is a fragmentary sectional view illustrating a modified form of the present inventive concept;

Figure 5 is a fragmentary side elevationof a car showing a further modified form of this invention; 7

Figure 6 is a fragmentary-sectional view taken along the line 6-6 of Figure 5.

Figure '7 is a diagrammatic end elevation of a dump car in its dumping position;

Figure 8 illustrates an attachable dumpwheel that is adapted to be attached to a dump car made according to Figures 5 and 6, but drawn on a smaller scale than said figures;

Figure 9 is a side elevation of another'form of the present invention; and

Figure 10 is a fragmentary sectional view taken along the line Ill-40 of Figure 9.

In order to disclose and record operable reductions to practice of the several forms "of the present inventive concept, reference will be-had to the accompanying drawings. However, it is to be understood that the examples herewith illustrated and described are not intended to express or imply any limitation to thisinvention, the scope of which is measured by the appended claims.

Referring first to Figures 1 and 2, reference character l2 denotes a railway dump car body, having a hinged dump gate I3; The body 12 is hinged to a wheeled truck 14 at E5, and is provided with a recess lfiin aside thereof opposite the dump gate 13. "A dump'roller I1 is journalled on a retractable arm I8 having reinforcements I811. The arml8|8a is mounted upon a shaft I9, the ends of whichare' carried in grooves or guide-ways 20 that are positioned in the recess l6 at op'p'osite'sides thereof. The arm I8 is further supported by an angle brace 2| which is pivoted to the arm [8 at its lower end and which is carried upon a shaft 22 at its upper end. The extremities of the shaft 22 are carried in grooves or guide-ways 23 which are also positioned in the recess It at opposite sides thereof. The arm l8 and the angle brace 2| pivoted thereto, form a folding retractable mechanism for holding the dump roller IT. The extremities of the shafts l9 and 22 provide guide-way followers.

A handle 24 is placed on roller 11 so that an operator may readily handle the roller l1 and it associated retractable supporting mechanism. At the upper end of the grooves or guide-ways 23 are notches 25 in which the shaft 22 is placed when the roller is retracted, and a clip 26 on the end of the arm I8 is positioned to be engaged by a hook 21 in the recess IE to further secure the roller I! and its supporting mechanism in their retracted position.

It readily will be seen that an operator may grasp the handle 24 on the roller I"! to partially take the weight off of its supporting members, after which the shafts I9 and 22 may be moved upwardly along the grooves 20 and 23 respectively, to their retracted position as illustrated in Figure 3. In this position, the roller I! and all of its supporting structure are moved within the flush clearance requirement of the side of the dump body |2.

Cars made according to this invention may be operated the same as non-dumping cars when the dump roller I1 and its supporting mechanism are retracted. After the cars are loaded, and as they approach the dump, an operator may quickly extend the roller to its operative posiabout its pivotal axis l5, with relation to the angle of the lower portions of the grooves or guideways 20 and 23, the roller is effective for tipping the body I2 as it rides up the inclined track 28, as diagrammatically illustrated in Figure '7.

The contour of the grooves and guide-ways 23 and 23 is such that the roller I! and its associated mechanism easily may be placed in their retracted position and as readily extended when desired.

Figure 4 illustrates a modified arrangement of the grooves or guide-ways along which the retractable supporting mechanism may be moved. The shaft 22 which carries the upper end of the support member 2| is carried in and movable along grooves or guide-ways 23a that are quite similar to the grooves or guide-ways 23. The arm l8 upon which the roller H is journalled, is carried upon the shaft l9 which, in this modified form, is movable along the grooves or guide-ways 23a that extend horizontally instead of vertically.

When the roller I7 and its supporting mechanism ||l|9-2|--22 are retracted in the modified arrangement shown in Figure 4, they are positioned as shown in the dotted lines.

In the forms of this invention shown in Figures 1, 2, 3 and 4, it will be noted that recesses I3 and lfia are provided to house the roller and Obviously, these housings subtract from,

dump roller I! may be journalled upon a supporting structure 3|, Figure 8, which is provided with hook-like projections 32 so spaced that they fit into the notches 33. The angular relationship of the notches 33, the support 3| and the hooks 32, is, as explained above, such that the moments of force exerted on the roller H to tip the car body, do not disarrange or move the roller with reference to said car body, but impart upward angular movement to the car body through the intermediary of the support 3| and the hooks 32.

Obviously, the support 3| quickly and easily may be attached to the car body |2 through the intermediary of the hook-like projections 32 being fitted into the notches 30. The support 3| and the roller are indicated in dotted lines in Figure 5, superimposed upon the fragmentary elevation of the car body I2, as it would appear in its operating position. In this form of the invention, the roller 3| is attached to the car body when the load is to be dumped and may readily be removed thereafter to eliminate the objectionable projection which is common fault in ordinary Granby type dump cars.

Furthermore, according to the form of the invention illustrated in Figures 5, 6, and 8, one roller assembly as illustrated in Figure 8, may be interchangeably mounted upon any number of cars that are provided with coordinated notches 30.

A still further advantage in this latter form of the invention is that when the cars are in use other than the actual dumping operation, the weight of the dump roller and its associated support is entirely removed, which is an obvious advantage well known to anyone skilled in this art.

In the form of the invention shown in Figures 9 and 10, a recess |6b is provided in the side of the dump body I2. The dump roller I1 is journalled upon an arm |8b, which is further supported by arm 2|b which is attached in angular relationship thereto.

The arms I81) and 2|b are mounted for limited rotary or angular movement upon a vertical pin or shaft 35, which in turn is rotatably mounted in bearings 36 and 31. The arms |8b and 2|b may be mounted to rotate upon the pin or shaft 35, or said member 35 may be rotatable in its supports 36 and 31, in which case the arms lib and- 2|b may be mounted to rotate conjointly with the shaft 35.

A thrust brace 38 is pivotally mounted in a bifurcated lug 39 and may be selectively attached to another bifurcated lug "ill on the arm 2 II), by means of a removable pin ll.

It will readily be seen that when the mechanism |8b'2|b upon which the dump roller H is journalled, is in an extended position as illustrated in Figures 9 and 10, the thrust brace 33 securely holds the assembly in such position for performing the dumping function.

When the dump roller if is not in use, the pin t! may be withdrawn from the bifurcated lug 4B and the thrust brace 38, thus releasing said brace from its engagement with the arm 2|b, whereupon the roller I1 and its supporting mechanism may be retracted to the position shown in dotted lines in Figure 9.

The retracting operation is merely the swinging of the roller l1 and its supporting arm |8b--2|b to a position adjacent the side of the dump body l2. In this retracted position, most of the mechanism |8b--2|b is in the recess |6b and the roller-ll is positioned immediately therebelow. I V

In order to hold the retractable assembly in its retracted position, the member 38 may be brought across the recess I61) on the outside of the roller support flb and engaged in another bifurcated lug 162 in the edge of the recess. The part 38 may be held in engagement with the bifurcated lug 42 by inserting the pin il through said lug and member 38. In this position, the retractable mechanism is securely held from accidentally swinging outwardly from the car body. When the roller I! is again to be extended for use, the thrust brace 38 is again positioned in the bifurcated lug 4i] on the arm 2 lb and held there by the pin 4 I.

Thus, the stated objects of this invention are successfully accomplished, in that means are provided for extending and retracting a dump roller on a dump car. Furthermore, means are provided for readily and interchangeab1y attaching a roller to dump cars. All of the simplified advantages of the Granby type dump car are obtained in the present invention and the above enumerated advantages are added.

While this specification discloses preferred means for reducing the present invention to practice and a preferred embodiment of the invention, changes may occur to those skilled in the art and may be made within the scope of the appended claims, without departing from this inventive concept.

What I claim and desire to secure by Letters Patent is:

1. The combination with a tiltable dump car body, of a normally retractable mechanism at times adapted to project laterally therefrom, a dump roller journalled on said mechanism, and means on the car body disposed to engage and to hold said mechanism in a projecting position during dumping.

2. The combination with a tiltable dump car body, of a normally retractable folding mechanism at times adapted to project laterally therefrom, a dump roller journalled on said mechanism, and means on the car body disposed to engage and to hold said mechanism in a projecting position during dumping.

3. In dump car construction, the improvement which comprises a tiltable dump body having a plurality of downwardly and inwardly inclined undercut notches in a side thereof, an arm having notch-engaging portions removably held on the body in the notches, and a dump roller journalled on the arm.

4. The combination with a tiltable dump car body, of a normally retractable mechanism at times adapted to project Iaterally therefrom, a dump roller journalled on said mechanism, means on the car body disposed to engage and to hold said mechanism in a projecting position during dumping and means for holding the mechanism in its retracted position when not being used for dumping.

5. The combination with a tiltab-le dump car body, of a normally retractablefolding mechanism at times adapted to project laterally therefrom, a dump roller journalled on said mechanism, means on the car body disposed to engage and to hold said mechanism in a projecting position during dumping and means for holding the mechanism in its retracted position when not being used for dumping.

6. In a dump car having a wheeled truck, the improvement which comprises a dumpbody hinged to the truck and having a recess in a side thereof, guide-ways positioned in the recess and terminating in downwardly and inwardly inclined portions, normally-retractable projecting mechanism having guide-way followers slidably supported on the body by said guide-Ways, and a dump roller journalled on said mechanism.

7. In a dump car having a wheeled truck, the improvement which comprises a dump body hinged to the truck and having a recess in a side thereof, guide-ways positioned in the recess and terminating in downwardly and inwardly inclined portions, normally retractable projecting mechanism slidably supported on the body by said guide-ways, said mechanism including an arm and a brace pivoted thereto, means on said arm and brace slidably engaging said guideways, a dump roller journalled on said mechanism.

8. In a dump car having a wheeled truck, the improvement which comprises a dump body hinged to the truck and having a recess in a thereof, guide-ways positioned in the recess and terminating in downwardly and inwardly inclined portions, normally retractable projecting mechanism slidably supported on the body by said guide-ways, said mechanism including an arm having a guide-way follower, and a brace pivoted thereto, said brace also having a guideway follower, and a dump roller journalled on said mechanism.

9. In a dump car whaving a wheeled truck, the improvement which comprises a dump body hinged to the truck and having a recess in a side thereof, vertically ranging guide-ways having lower end portions inwardly inclined with reference to other portions thereof and positioned in said recess, projecting mechanism retractably held on said body through the intermediary of said guide-ways, a dump roller journalled on the mechanism, and means on said mechanism cooperating with said guideways for holding said mechanism in dumping position.

10. In a dump car having a wheeled truck, the improvement which comprises a dump body hinged to the truck and having a recess in a side thereof, vertically ranging guide-ways having lower end portions inwardly inclined with reference to other portions thereof and positioned in said recess, projecting mechanism having guideway followers, retractably held on said body through the intermediary of said guide-ways and followers, and a dump roller journalled on the mechanism.

11. In a dump car having a wheeled truck, the improvement which comprises a dump body hinged to the truck and having a recess in a side thereof, vertically ranging guide-ways having lower end portions angularly inclined inwardly with reference to other portions thereof and positioned in said recess, horizontally ranging guide-ways on the body having outer end portions downwardly and inwardly inclined with ref erence to other portions thereof, projecting mechanism having guide-way followers, retractably held on said body through the intermediary of said guide-Ways and followers, and a dump roller journalled on the mechanism.

12. In a dump car having a wheeled truck, the improvement which comprises a dump body hinged to the truck and having a recess in a side thereof, vertically ranging guide-ways having lower end portions inwardly inclined with reference to other portions thereof and positioned in said recess, projecting mechanism retractably held on said body through the intermediary of said guide-ways, a dump roller journalled on the mechanism, and means for at times holding the mechanism in a retracted position.

13. In a dump car having a wheeled truck, the improvement which comprises a dump body hinged to the truck and having a recess in a side thereof, vertically ranging guide-ways having lower end portions inwardly inclined with reference to other portions thereof and positioned in said recess, projecting folding mechanism retractably held on said body through the intermediary of said guide-ways, and a dump roller journalled on the mechanism.

14. In a dump car having a wheeled truck, the improvement which comprises a dump body hinged to the truck and having a recess in a side thereof, vertically ranging guide-ways having lower end portions inwardly inclined with reference to other portions thereof and positioned in said recess, projecting mechanism inclusive of an arm, a brace pivotally attached thereto, and guide-way followers on said arm and brace, retractably held on said body through the intermediary of said guide-ways and followers, and a dump roller journalled on the mechanism.

15. In a dump car having a wheeled truck and a dump body hinged to said truck, the improvement which comprises inwardly and downwardly inclined vertically spaced recesses on the car body, a relatively and normally movable arm projecting from said car body, means on the arm adapted by its size and shape to cooperate with said recess to hold the arm rigidly in its projected position during dumping, and a roller on the outer extremity of the projecting arm.

16. The combination with a tiltable dump car body, of a normally and relatively movable arm adapted to be securely held thereon during dumping and projecting therefrom, a dump roller journalled adjacent the outer end of said arm, an inwardly and downwardly inclined recess on the car body above the arm, and means on said arm adapted by its size and shape to enter said recess and to cooperate therewith to hold the arm rigidly in a projecting position during dumping whereby the car body will be tilted.

ARTHUR V. CARD. 

